236 



OMENTAL PLAGUE 



CHAP. 



No. 



1st 



2nd 



3rd 



4th 



5th 



6th 



7th 



8th 



9th 



Date of Injection 



May 6 . 



„ 22 . 

 June 5 . 



„ 14. 

 July 9 . 



„ 18. 



„ 31. 

 August 27 

 September 16 



Method of 

 Injection. 



Intraperitoneal 



Material (and Amount) Injected. 



Large dose of sterile gelatine culture. 



Small dose of living gelatine culture. 



The test in corpore was made as follows : — 



(1) July 29. — Guinea-pig No. 19 was subcutaneously 

 injected with 100 cubic millimetres of living plague 

 emulsion mixed with 50 cubic millimetres of blood 

 serum. At the same time 100 cubic millimetres of the 

 emulsion was injected into a control animal. 



Both these animals remained alive. The experiment 

 is therefore useless, the amount of living culture injected 

 having been insufficient to cause death in the control 

 animal. 



(2) August 9. — The experiment was repeated. Guinea- 

 pig No. 28 was subcutaneously injected with 100 cubic 

 millimetres of living plague emulsion mixed with 100 

 cubic millimetres of blood serum of guinea-pig No. 4. 

 At the same time 100 cubic millimetres of the emulsion 

 were injected into a control animal. 



The control guinea-pig died of plague on the sixth 



